But alas, life is never that simple. The interwebs are abuzz about the clip (though Paramount's doing its best to keep it off of YouTube), the trades supposedly can't figure out what's going on, and of the two sites supposedly affiliated with this thing one is completely lacking in information and the other one consists of the sort of puzzles that drive former English majors like me to scour the web for cheats. Thankfully, the web is full of cheats.
The trailer is hard to find (thanks, Paramount). Try YouTube searches for J.J. Abrams or Cloverfield. [UPDATE:Here it is.] The puzzles can be found at EthanHaasWasRight.com. Figuring them out rewards the player with grainy video clips of some guy mumbling about the prophecies of Ethan Hass (presumably not the character on "The Class." For those too lazy to play or look up cheat codes, do a YouTube search for Ethan Haas videos. While Paramount is being jerktackular about the trailer, they haven't gotten around to yanking all of those yet.
The other site, which may indicate the film's release date, the day of the fake surprise party in the trailer or just some arbitrary day in January, can be found at www.1-18-08.com.